Source code for spack.compilers.clang

# Copyright 2013-2021 Lawrence Livermore National Security, LLC and other
# Spack Project Developers. See the top-level COPYRIGHT file for details.
#
# SPDX-License-Identifier: (Apache-2.0 OR MIT)

import re
import sys

import llnl.util.lang

from spack.compiler import Compiler, UnsupportedCompilerFlag
from spack.version import ver

#: compiler symlink mappings for mixed f77 compilers
f77_mapping = [
    ('gfortran', 'clang/gfortran'),
    ('xlf_r', 'xl_r/xlf_r'),
    ('xlf', 'xl/xlf'),
    ('pgfortran', 'pgi/pgfortran'),
    ('ifort', 'intel/ifort')
]

#: compiler symlink mappings for mixed f90/fc compilers
fc_mapping = [
    ('gfortran', 'clang/gfortran'),
    ('xlf90_r', 'xl_r/xlf90_r'),
    ('xlf90', 'xl/xlf90'),
    ('pgfortran', 'pgi/pgfortran'),
    ('ifort', 'intel/ifort')
]


[docs]class Clang(Compiler): # Subclasses use possible names of C compiler cc_names = ['clang'] # Subclasses use possible names of C++ compiler cxx_names = ['clang++'] # Subclasses use possible names of Fortran 77 compiler f77_names = ['flang', 'gfortran', 'xlf_r'] # Subclasses use possible names of Fortran 90 compiler fc_names = ['flang', 'gfortran', 'xlf90_r'] version_argument = '--version' @property def debug_flags(self): return ['-gcodeview', '-gdwarf-2', '-gdwarf-3', '-gdwarf-4', '-gdwarf-5', '-gline-tables-only', '-gmodules', '-gz', '-g'] @property def opt_flags(self): return ['-O0', '-O1', '-O2', '-O3', '-Ofast', '-Os', '-Oz', '-Og', '-O', '-O4'] # Clang has support for using different fortran compilers with the # clang executable. @property def link_paths(self): # clang links are always the same link_paths = {'cc': 'clang/clang', 'cxx': 'clang/clang++'} # fortran links need to look at the actual compiler names from # compilers.yaml to figure out which named symlink to use for compiler_name, link_path in f77_mapping: if self.f77 and compiler_name in self.f77: link_paths['f77'] = link_path break else: link_paths['f77'] = 'clang/flang' for compiler_name, link_path in fc_mapping: if self.fc and compiler_name in self.fc: link_paths['fc'] = link_path break else: link_paths['fc'] = 'clang/flang' return link_paths @property def verbose_flag(self): return "-v" openmp_flag = "-fopenmp" @property def cxx11_flag(self): if self.real_version < ver('3.3'): raise UnsupportedCompilerFlag( self, "the C++11 standard", "cxx11_flag", "< 3.3" ) return "-std=c++11" @property def cxx14_flag(self): if self.real_version < ver('3.4'): raise UnsupportedCompilerFlag( self, "the C++14 standard", "cxx14_flag", "< 3.5" ) elif self.real_version < ver('3.5'): return "-std=c++1y" return "-std=c++14" @property def cxx17_flag(self): if self.real_version < ver('3.5'): raise UnsupportedCompilerFlag( self, "the C++17 standard", "cxx17_flag", "< 3.5" ) elif self.real_version < ver('5.0'): return "-std=c++1z" return "-std=c++17" @property def c99_flag(self): return '-std=c99' @property def c11_flag(self): if self.real_version < ver('6.1.0'): raise UnsupportedCompilerFlag(self, "the C11 standard", "c11_flag", "< 6.1.0") else: return "-std=c11" @property def cc_pic_flag(self): return "-fPIC" @property def cxx_pic_flag(self): return "-fPIC" @property def f77_pic_flag(self): return "-fPIC" @property def fc_pic_flag(self): return "-fPIC" required_libs = ['libclang']
[docs] @classmethod @llnl.util.lang.memoized def extract_version_from_output(cls, output): ver = 'unknown' if ('Apple' in output) or ('AMD' in output): return ver match = re.search( # Normal clang compiler versions are left as-is r'clang version ([^ )\n]+)-svn[~.\w\d-]*|' # Don't include hyphenated patch numbers in the version # (see https://github.com/spack/spack/pull/14365 for details) r'clang version ([^ )\n]+?)-[~.\w\d-]*|' r'clang version ([^ )\n]+)', output ) if match: ver = match.group(match.lastindex) return ver
[docs] @classmethod def fc_version(cls, fc): # We could map from gcc/gfortran version to clang version, but on macOS # we normally mix any version of gfortran with any version of clang. if sys.platform == 'darwin': return cls.default_version('clang') else: return cls.default_version(fc)
[docs] @classmethod def f77_version(cls, f77): return cls.fc_version(f77)